Car-lighting system.



W. COOPER. CAR LIGHTING SYSTEM. APPLIOATION FILED SEPT.10,1909.

1,079,400. Patented Nov. 25,1913.

: INVENTOR BY 3 UNITED fr irrnn'r ornion WILLIAM COOPER, 0F PlTT fiUlfii-ffi, FENNSYLVANIA, ASSIGNOR TO WESTINGHOUSE ELECTRIC AND MANUFAGTUBXIH} CGB'I'PAL Y, A CORPORATION OF PENNSYLVANIA,

GAE-LEGETING SYSTEIVZ.

iscoifioniion To all whom it may (071m Y Be it known that .l, ll 1min n citizen of the United titzites, and u r of Pittsburgh, in the county of l of Le tters Patent Patented N 0v. 25, 19 l Serial No. 517,151.

cfil s in multiple of four lamps each; a motor ll. 'nd a booster generator 11 which opieratii'ely connected to the motor and is E mlupted to supply energy to the lamps 9. A already pointed out, the main motor and State of Pennsylvania, have in.

new and useful Improvement in {lin ing cir it is established through the controller ing Systems, of which the following is it but :1 second circuit is also established specification. trom the traveling contact member 2 My invention relates to s3 is lighting and particularly to are adapted for with electii polled cars and other railway vehicles,

The object of my invention to provid an improved system of the class cated in which the intensity of tl produced may be maintained 7 constant, irrespective oi the voltage tions in the supply circuit from w deli t propelling motors of the vehicle rereia energy.

According to my invention, 1 or vehicle with a motor genera set and provide autonnitic means lating the field of the booster gone. i to maintain a coi'istant supply of one, the lighting circuit.

Figure 1 of the accon'ipanying drawings sult stunliul i warm through field magnet winding 12 and mature 13 of: the motor 10, conductor lei, relay switch 15 and conductor 16 to the return circuit conductor 6. The driving motor 10 of the booster set has the characteristics of a series wound motor, since all of the current in the armature circuit traverses the E above indiv field magnetwinding, and is connected, G l ier directly across the main circuit, or in e series relation to the field magnet winding the booster generator, according as the relay switch 15 is closed or open.

A branch circuit is established from the tnirciing contact 2 through the field mag- \Yiih'illl 12 of the motor 10, armature l? I t boos generator ll, magnet winding it; of relay switch 15 and conductor 19 to 'rcuit being, completed from the lamps 9, a (:1

line pointthrough conductor 20 to return is a diagrammatic view of a lighting our condlu'tor (3. The generator field magnet embodying my invention and Fig. 2 is n, windin r 13 provided with energy irom similarview of a slightly modified nix-sn oment, the field regulation of the ho generator being elicctcd, in th one o" the current supplied to the iightin on and, in the other case, by the volt: pressed upon said circuit.

Referring to Fig. 1 of the din-unio 's.

energy is supplied from any suitnbh; sot through .Z, and a controller to the pl txlllllg ntors 4 and 5 of an electilo rel lo, :1

being completed through the rturn 5 rail conductor 6.

The drum of. the controller to dccupy positions a, b c (5 and 1 with a crenc'e to the fingers 7, in order rheostatic. control of the motors by filtilili a conductor 1, 21 traveling 1Uil, l('

l o 0 ii or A I l :n our on l or let, it being connected in multiple with the relay switch 15, as above oporuiion of the system is as fol l lows: siuning that the motor 10 is operruins with the relay switch 15 closed and that the energy is being supplied to the honps J through the generator armature 17, if. under these conditions, the voltage of the line 1 decreases the voltage and current supplied to ihe motor 10 and to the lamps 9 will 1 until the relay switch 15 is telni opened. When the relay switch the motor circuit is completed directly nigh lhc tiold magnet winding 21 of the generator ll, thereby causing said machine to till fl lilrltllt the line voltage; The voltage. imp; d upon the lamp circuit is thus loo :1 d and raised intermittently between liniits which are determined by the notion :in-d position of the relay switch 15 but in practi he relay switch is found to vibrate he i ween its open and its closed position either rupior or slowly, depending upon the luctnnlions oi the line voltage, and thereby to maintain a sliibstantially constant potential across the lamp circuit.

In the diagram of Fig. 2, the circuit conmotions are similar to those of Fig. 1, except that the magnet winding 18 of the relay switch 15 is connected in multiple circuitwith the lamps 9 and is, consequently, dependent upon the voltage impressed upon the lamp circuit instead'of upon the current supplied to it. The operation of this system is similar to that of Fig. 1.

My invention is not restricted to car lighting systems, and I desire that its scope shall only be limited by the appended claims.

I claim as my invention:

1. In an electric current distributing'systern, the combination with a source of variablc-voltage energy, translating devices requiring a substantially constant-voltage supply of energy, an electric motor having a field magnet winding pertaining thereto, a generator operatively connected to said inotor for supplying energy to the translating devices, and a field magnet winding pertaining to the generator, of electro-responsive means adapted to short circuit the field mag net winding pertaining to the generatorfsaid means being dependent upon a function of the energy supplied to the translating devices.

In an electric current distributing system, the combination with a source of variable-voltage cne-rg a motor connected thereto, a generator driven by the motor, a plurality of translating devices supplied with energy from said source through the armature of said generator, and means dependent upon a function of the energy supplied to said generator armature and translating devices being electrically connected in multiple circuit to the armature of the motor and the field magnet of the generator.

l. In an electric current distributing system, the combination with a source of variablc-voltage energy, a motor connected there to, a generator operatively connected to the motor and having a field magnetwinding connected in series relation with the motor armature, a relay switch adapted to shortcircuit the generator field magnet and having an actuating magnet connected in series circuit with the field magnet of the motor, the armature of the generator and trans lating devices to which it is desired to sup ply constant current energy being connected to the source of energy through the motor field winding.

In testimony whereof, I have hereunto subscribed my name this 30th day of Aug,

WILLIAM COOPER. \Vitnesses G. H. HAn'rsoUoH, J r., B. B. I'IINES. 

